JP2014121460A - Device, system, and method for determining golf club lie angle adjustment method - Google Patents

Abstract

Provided is a golf club lie angle adjustment method determination system capable of providing a club with an optimum lie angle for a golfer. A golf club photographing apparatus for photographing an image of a club head at the time of impact is provided. The lie angle adjustment method determination includes a calculation means for calculating the lie angle difference between the design value of the lie angle and the measured value of the lie angle of the golf club at the time of impact using the image data transmitted from the golf club photographing device. A system having the apparatus 20 is assumed. If the absolute value of the lie angle difference is less than or equal to a predetermined value by the recommendation means of the lie angle adjustment method determination device 20, it is recommended that the lie angle be adjusted by a lie angle adjustment function provided in advance in the club. If the absolute value of the angle difference exceeds the specified value, it is recommended to adjust the lie angle by exchanging the shaft or club.
[Selection] Figure 1

Description

  The present invention relates to a golf club lie angle adjustment method determination device, a lie angle adjustment method determination system, and a lie angle adjustment method determination method capable of providing a club having an optimal lie angle for a golfer.

  Conventionally, as a device having a function of measuring the lie angle of a golf club at the time of impact, the device of Patent Document 1 has been proposed.

The device of Patent Document 1
A line sensor camera provided behind the golf club head at the time of impact in a golf swing and capable of detecting that a plurality of markings formed on a back face portion of the golf club head pass on a scanning line;
Calculation means for detecting the behavior of the golf club head by calculating the coordinates of the reference point of the golf club head at a specific time from the time when each of the plurality of markings measured by the line sensor camera passes on the scanning line. When,
Discrimination means for discriminating characteristics of the golf swing based on a detection result by the computing means;
A golf club selection device comprising: a selection means for selecting a golf club or a club shaft suitable for a golfer performing the golf swing based on a determination result of the determination means (claim 1).

  The calculating means calculates at least one data among the speed of the golf club head at the time of impact, the direction of the hitting surface, the lie angle of the club shaft, and the track of the golf club head in the golf swing. 2).

JP 2005-31734 A

  In the apparatus of Patent Document 1, for example, when the impact lie angle is larger than a predetermined lie angle of the club, that is, when it is an upright, a club having a larger lie angle than the golf club used for swing measurement is recommended. The Thus, the impact lie angle can be made close to a predetermined lie angle of the club (paragraph 0102).

  However, the device of Patent Document 1 obtains a specific numerical difference between the design value of the lie angle of the golf club and the measured value of the lie angle of the golf club at the impact when the golfer swings the golf club, Golf clubs are not recommended based on the numerical difference. For this reason, it is difficult for the apparatus of Patent Document 1 to provide a golf club with a lie angle optimum for a golfer.

  The present invention has been made in view of the above-described circumstances, and provides a golf club lie angle adjustment method determination device, lie angle adjustment method determination system, and lie angle that can provide a golf club with an optimal lie angle. An object is to provide an adjustment method determination method.

  In order to achieve the above object, the present invention provides a golf club lie angle adjustment method determination device shown in (1) below, a golf club lie angle adjustment method determination system shown in (2), and (3) a golf shown in FIG. Provide a method for determining the club lie angle adjustment method.

(1) Calculation means for calculating a lie angle difference that is a difference between a design value of the lie angle of the golf club and a measured value of the lie angle of the golf club at the time of impact when a golfer swings the golf club;
If the absolute value of the lie angle difference is less than or equal to a predetermined value, it is recommended that the lie angle be adjusted using a lie angle adjustment function provided in advance in the club, and if the absolute value of the lie angle difference exceeds the predetermined value. Comprises a recommendation means for recommending that the lie angle be adjusted by exchanging the shaft or the club.

(2) a golf club photographing device for photographing an image of a club head at the time of impact when a golfer swings the golf club;
Calculating means for calculating a lie angle difference that is a difference between a design value of the lie angle of the golf club and a measured value of the lie angle of the golf club at the time of impact when a golfer swings the golf club; If the absolute value is less than the predetermined value, it is recommended to adjust the lie angle using the lie angle adjustment function provided in advance in the club. If the absolute value of the lie angle difference exceeds the predetermined value, shaft replacement or A golf club lie angle adjustment method determination device comprising recommended means for recommending adjustment of the lie angle by replacement,
The golf club photographing device transmits image data of a club head at the time of photographing impact to the golf club lie angle adjustment method determining device,
The golf club lie angle adjustment method determination device calculates the lie angle difference using image data transmitted from the golf club photographing device. .

(3) calculating a lie angle difference which is a difference between a design value of the lie angle of the golf club and a measured value of the lie angle of the golf club at the time of impact when a golfer swings the golf club;
If the absolute value of the lie angle difference is less than or equal to a predetermined value, it is recommended that the lie angle be adjusted using a lie angle adjustment function provided in advance in the club, and if the absolute value of the lie angle difference exceeds the predetermined value. Is recommended to adjust the lie angle by exchanging the shaft or the club.

  In the present invention, the predetermined value of the absolute value of the lie angle difference is suitably a predetermined value in the range of 2 to 4 °, and particularly preferably 3 °. When the predetermined value of the absolute value of the lie angle difference exceeds 4 °, particularly when it exceeds 3 °, it is difficult to adjust the lie angle by the lie angle adjustment function provided in advance in the club. This is because it is appropriate to adjust the lie angle. The lie angle adjustment function provided in advance in the club will be described later.

  In the present invention, the lie angle difference which is the difference between the design value of the lie angle of the golf club and the measured value of the lie angle of the golf club at the time of impact is calculated, and the lie angle difference which is a specific numerical value is used as a reference, It is recommended to adjust the lie angle by the lie angle adjustment function provided in advance in the club, or it is recommended to adjust the lie angle by exchanging the shaft or the club. It is possible to provide.

It is the schematic which shows an example of the lie angle adjustment method determination system of the golf club which concerns on this invention. It is a disassembled perspective view which shows an example of the golf club which has a lie angle adjustment function. It is a schematic diagram which shows the image of the club head at the time of impact.

  The present invention will be described below with reference to embodiments shown in the drawings. FIG. 1 is a schematic diagram showing an example of a golf club lie angle adjustment method determination system according to the present invention. In the lie angle adjustment method determination system of FIG. 1, reference numeral 10 denotes a golf club photographing device, 20 denotes a golf club lie angle adjustment method determination device, 30 denotes a head detection device, and 40 denotes a hit ball photographing device.

  The golf club photographing apparatus 10 has a camera 12 with a strobe disposed behind a golf ball 50 set on a mat or lawn. This golf club photographing device 10 photographs a club head from the rear at the time of impact when a golfer swings a golf club. In this case, the distance a between the center of the golf ball and the camera 12 is suitably 0.8 to 1.2 m.

  The lie angle adjustment method determination device 20 is a computer such as a notebook personal computer connected to the golf club photographing device 10 (hereinafter, the lie angle adjustment method determination device is abbreviated as “PC”). The PC 20 uses a design value of the lie angle of the golf club (hereinafter referred to as “design lie angle”) and a measured value of the lie angle of the golf club upon impact when the golfer swings the golf club (hereinafter referred to as “dynamic lie angle”). The lie angle is adjusted by a lie angle adjustment function provided in advance in the club when the absolute value of the lie angle difference is equal to or less than a predetermined value. And recommending means for recommending adjusting the lie angle by exchanging the shaft or the club when the absolute value of the lie angle difference exceeds a predetermined value. The PC 20 includes a monitor.

  In the head detection device 30, a pair of optical sensors 32 each including a light emitting unit and a light receiving unit are set with an interval of, for example, about 70 mm. In this case, the distance in the club head passing direction between the set golf ball 50 and the optical sensor 32 closer to the golf ball 50 is preferably set to about 40 mm.

  In the hit ball shooting device 40, a pair of cameras 42 with strobes are set at a predetermined distance in the flying ball direction of the hit golf ball, for example, at an interval of 100 to 250 mm. In this case, the distance in the golf ball flying line direction between the set golf ball 50 and the camera 42 closer to the golf ball 50 can be set to, for example, 50 to 300 mm.

  When a golfer hits the golf ball 50 with a golf club, the pair of optical sensors 32 detects the passage of the club head prior to hitting. Then, the time required for the club head to pass between the sensors 32 is measured, and the head speed is calculated by the computing unit of the PC 20 from the relationship with the distance between the sensors 32. Next, in response to a detection signal from the sensor 32 on the side close to the ball 50, a trigger output that determines the shooting timing of the golf club at the time of impact acts on the golf club shooting apparatus 10. Similarly, a trigger output that determines the shooting timing of the hit golf ball 50 acts on the hit ball shooting device 40. In this case, the above series of operations is performed under the control of the PC 20.

  For the trigger output described above, for example, a plurality of head speeds to be applied are measured in advance, and the delay time corresponding to these head speeds and the shutter interval times of the cameras 12, 42, 42 of the golf club photographing apparatus 10 and the hit ball photographing apparatus 40 are determined. Set to PC20. The delay time is the time from the time when the head detection device 30 detects the passage of the club head to the time when the shutters of the cameras 12, 42 and 42 and the strobe are operated. The camera is preferably a CCD camera having a shutter speed of 1/10000 to 1/20000 seconds.

  When performing measurement using the system of this example, when the golf club 50 hits the golf ball 50, the head detection device 30 detects the passage of the club head and sends a detection signal to the PC 20. The PC 20 calculates the head speed from the detection signal and sends a trigger signal corresponding to the obtained head speed to the camera 12 of the golf club photographing apparatus 10. Then, an image of the club head at the time of impact is taken from behind. FIG. 3 shows a schematic diagram of an image. In FIG. 3, 60 is a club head at impact, 50 is a golf ball at impact, and 70 is a dynamic lie angle. Golf club image data shot by the golf club shooting device 10 is sent to the PC 20.

  Further, the PC 20 sends a trigger signal corresponding to the obtained head speed to the camera 42 of the hit ball photographing device 40. Then, after the club head hits the golf ball, shooting is performed when the golf ball comes to the front of each camera 42. The image data of the golf ball photographed by the hit ball photographing device 40 is sent to the PC 20.

  In the PC 20, the calculation means calculates the dynamic lie angle using the image data transmitted from the golf club photographing apparatus 10 and calculates the lie angle difference, which is a value obtained by subtracting the design lie angle from the dynamic lie angle.

  In the PC 20, the calculation means calculates the initial velocity of the hit ball, the vertical and horizontal launch angles, the back spin amount, the side spin amount, and the like using the image data transmitted from the hit ball photographing device 40.

  Then, the PC 20 recommends that the lie angle be adjusted by a lie angle adjustment function provided in advance in the club when the absolute value of the lie angle difference is 3 ° or less by the recommendation means. If the value exceeds 3 °, it is recommended to adjust the lie angle by exchanging the shaft or club. The lie angle difference and the recommended result are displayed on the monitor of the PC 20.

  Here, a club provided with a lie angle adjustment function in advance will be described. Although there is no limitation on the configuration of the club in which the lie angle adjustment function is provided in advance, for example, a golf club shown in FIG. 2 can be cited (see JP 2010-131182 A). In addition, although the wood type golf club is shown by Unexamined-Japanese-Patent No. 2010-131182, in this invention, the lie angle difference of an iron golf club is mainly measured. This is because the lie angle is more important for iron golf clubs than for wood type golf clubs.

  The golf club of FIG. 2 has a shaft 4 attached to a hosel 3 of a head 1 via a shaft case 5 and a screw member 6. The shaft 4 is inserted into the shaft insertion hole 5a of the shaft case 5 and fixed using an adhesive. The shaft case 5 is inserted into the hosel 3 of the head 1, and the male screw 6 b of the screw member 6 is screwed into the female screw 3 a of the hosel 3. The shaft insertion hole 5 a of the shaft case 5 is oblique to the axis of the shaft case 5.

  The screw member 6 has a substantially annular shape, and the lower half portion has a smaller diameter than the upper half portion 6a, and a male screw 6b is engraved on the outer peripheral surface of the lower half portion. Six planar portions 6e are provided on the outer peripheral surface on the upper end side of the upper half 6a, and are nut-shaped. The screw member 6 can be rotated by applying a tool such as a monkey or a spanner to the flat portion 6e.

  In the golf club of FIG. 2, when the screw member 6 is loosened and removed, the shaft case 5 can be extracted from the hosel hole 3H. Therefore, the shaft case 5 is slightly rotated to change its direction and inserted again into the hosel hole 3H, and the screw member 6 is screwed. Since the shaft center of the shaft case 5 is inclined with respect to the shaft center of the hosel hole 3H, the shaft case 5 is changed with respect to the head 1 of the golf club. The mounting direction of the shaft 4 is changed, and the lie angle is changed.

In the present invention, when the lie angle is adjusted by a lie angle adjusting function, shaft exchange or club exchange provided in advance in the club, for example, the following is performed.
If the dynamic lie angle is N ° greater than the design lie angle, the lie angle is N ° upright, so the lie angle is adjusted so that the lie angle is N ° flat.
When the dynamic lie angle is N ° smaller than the design lie angle, the lie angle is N ° flat, so the lie angle is adjusted so that the lie angle is N ° upright.

  In addition, this invention is not limited to embodiment mentioned above. For example, in the above-described embodiment, a camera that captures a still image is used as the golf club imaging device, but a video camera that captures a moving image may be used.

  Next, examples of the present invention will be described. The dynamic lie angle of the golf club shown in Table 1 below was measured using the lie angle adjustment method determination system shown in FIG. The lie angle difference in Table 1 is a value of (dynamic lie angle−design lie angle).

  As shown in Table 1, in this example, when the absolute value of the lie angle difference is 3 ° or less (clubs 2, 4, 5, 6), the lie angle is adjusted by the lie angle adjustment function provided in advance in the club. If the absolute value of the lie angle difference exceeds 3 ° (clubs 1 and 3), it is recommended to adjust the lie angle by exchanging the shaft or the club. It was. In Table 1, the launch angle and the side spin amount in the right direction of the hit ball calculated by the PC 20 using the image data transmitted from the hit ball photographing device 40 are also shown.

DESCRIPTION OF SYMBOLS 10 Golf club imaging device 12 Camera with flash 20 Golf club lie angle adjustment method determination device 30 Head detection device 32 Optical sensor 40 Hitting ball shooting device 42 Camera with flash 50 Golf ball 60 Club head 70 Dynamic lie angle

Claims (6)

A calculating means for calculating a lie angle difference that is a difference between a design value of the lie angle of the golf club and a measured value of the lie angle of the golf club at the time of impact when a golfer swings the golf club;
If the absolute value of the lie angle difference is less than or equal to a predetermined value, it is recommended that the lie angle be adjusted using a lie angle adjustment function provided in advance in the club, and if the absolute value of the lie angle difference exceeds the predetermined value. Comprises a recommendation means for recommending that the lie angle be adjusted by exchanging the shaft or the club.   The lie angle adjustment method determination device according to claim 1, wherein the predetermined value of the absolute value of the lie angle difference is a predetermined value in a range of 2 to 4 °. A golf club photographing device for photographing an image of a club head at the time of impact when a golfer swings a golf club;
Calculating means for calculating a lie angle difference that is a difference between a design value of the lie angle of the golf club and a measured value of the lie angle of the golf club at the time of impact when a golfer swings the golf club; If the absolute value is less than the predetermined value, it is recommended to adjust the lie angle using the lie angle adjustment function provided in advance in the club. If the absolute value of the lie angle difference exceeds the predetermined value, shaft replacement or A golf club lie angle adjustment method determination device comprising recommended means for recommending adjustment of the lie angle by replacement,
The golf club photographing device transmits image data of a club head at the time of photographing impact to the lie angle adjustment method determining device,
The lie angle adjustment method determination system for a golf club, wherein the calculation means of the lie angle adjustment method determination device calculates the lie angle difference using image data transmitted from the golf club photographing device.   The lie angle adjustment method determination system according to claim 3, wherein the predetermined value of the absolute value of the lie angle difference is a predetermined value in a range of 2 to 4 °. Calculating a lie angle difference which is a difference between a design value of the lie angle of the golf club and a measured value of the lie angle of the golf club at the time of impact when a golfer swings the golf club;
If the absolute value of the lie angle difference is less than or equal to a predetermined value, it is recommended that the lie angle be adjusted using a lie angle adjustment function provided in advance in the club, and if the absolute value of the lie angle difference exceeds the predetermined value. Is recommended to adjust the lie angle by exchanging the shaft or the club.   The lie angle adjustment method determination method according to claim 5, wherein the predetermined value of the absolute value of the lie angle difference is a predetermined value in a range of 2 to 4 °.

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